Francisella tularensis Cyclooxygenase-2

PDB/DOI:10.2210/pdb5cox/pdb

*RefSeq#: NP_000954

*Organism (including strain):Francisella tularensis

Etiologic Risk Group: Class A “Select Agent”

*Disease Information (sort of like the Intro to your Mini-up): Francisella tularensis is a pathogenic species of Gram-negative bacteria and the causative agent of **tularemia**, the pneumonic form of which is often lethal without treatment. It is a fastidious, facultative **intracellular** bacterium which requires **cysteine** for growth.**[1]** Due to its low infectious dose, ease of spread by aerosol and high **virulence**, F. tularensis is classified as a Class A Select Agent by the U.S. government, along with other potential agents of bioterrorism such as **Yersinia pestis**, Smallpox and Ebola.

Link to TDR Targets page (if present):**http://www.bindingdb.org/bind/luceneResult.jsp?thisInput=cyclooxygenase-2&submit=Go**

Link to Gene Database page (NCBI, EuPath databases -e.g. TryTryp, PlasmoDB, etc - or PATRIC, etc.):
**http://www.ncbi.nlm.nih.gov/protein/3MDL_A**

Essentiality of this protein:
Target Enzyme:
Cyclooxygenase (COX), officially known as prostaglandin-endoperoxide synthase (PTGS):
Why?
Francisella tularensis, a bacterium which causes tularemia in humans, is classified as a CDC category A bioterrorism agent. In this study, we demonstrate that celecoxib, an anti-inflammatory cyclooxygenase-2 inhibitor in clinical use, exhibits activity against a type A strain of F. tularensis (Schu S4), the live vaccine strain of F. tularensis (a type B strain), and F. novicida (“F. tularensis subsp. novicida”) directly in growth medium. This bacterial killing, however, was not noted with rofecoxib, despite its higher potency than that of celecoxib in inhibiting cyclooxygenase-2. The unique ability of celecoxib to inhibit the proliferation of F. tularensis could be pharmacologically exploited to develop novel anti-Francisellatherapeutic agents, of which the proof of principle is demonstrated by compound 20, a celecoxib derivative identified through the screening of a celecoxib-based focused compound library. Compound 20 inhibited the intracellular proliferation of Francisella in macrophages without causing appreciable toxicity to these host cells. Together, these data support the translational potential of compound 20 for the further development of novel, potent anti-Francisella agents.”
**http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2704645/**
Complex of proteins?:

Druggable Target (list number or cite evidence from a paper/database showing druggable in another organism):

See “Essentiality of Protein” section, the target can be drugged/attached to. Also see:**http://www.bindingdb.org/bind/luceneResult.jsp?thisInput=cyclooxygenase-2&submit=Go**
*EC#:1.14.99.1
Link to BRENDA EC# page:Brenda Info:
**http://brenda-enzymes.org/php/result_flat.php4?ecno=1.14.99.1**
Reaction catalyzed by prostaglandin-endoperoxide synthase (1.14.99.1)

arachidonate + AH2 + 2 O2 = prostaglandin H2 + A + H2O


Image of protein (PyMol with features delineated and shown separately):


5cox_bio_r_500_jmg5856_VDS_SP14.jpg


*Amino Acid Sequence (paste as text only - not as screenshot or as 'code'):
Protein Sequence- FASTA:
>5COX:A|PDBID|CHAIN|SEQUENCE
ANPCCSNPCQNRGECMSTGFDQYKCDCTRTGFYGENCTTPEFLTRIKLLLKPTPNTVHYILTHFKGVWNIVNNIPFLRSL
IMKYVLTSRSYLIDSPPTYNVHYGYKSWEAFSNLSYYTRALPPVADDCPTPMGVKGNKELPDSKEVLEKVLLRREFIPDP
QGSNMMFAFFAQHFTHQFFKTDHKRGPGFTRGLGHGVDLNHIYGETLDRQHKLRLFKDGKLKYQVIGGEVYPPTVKDTQV
EMIYPPHIPENLQFAVGQEVFGLVPGLMMYATIWLREHQRVCDILKQEHPEWGDEQLFQTSKLILIGETIKIVIEDYVQH
LSGYHFKLKFDPELLFNQQFQYQNRIASEFNTLYHWHPLLPDTFNIEDQEYSFKQFLYNNSILLEHGLTQFVESFTRQIA
GRVAGGRNVPIAVQAVAKASIDQSREMKYQSLNEYRKRFSLKPYTSFEELTGEKEMAAELKALYSDIDVMELYPALLVEK
PRPDAIFGETMVELGAPFSLKGLMGNPICSPQYWKPSTFGGEVGFKIINTASIQSLICNNVKGCPFTSFNVQDPQPTKTA
TINASASHSRLDDINPTVLIKRRSTEL
>5COX:B|PDBID|CHAIN|SEQUENCE
ANPCCSNPCQNRGECMSTGFDQYKCDCTRTGFYGENCTTPEFLTRIKLLLKPTPNTVHYILTHFKGVWNIVNNIPFLRSL
IMKYVLTSRSYLIDSPPTYNVHYGYKSWEAFSNLSYYTRALPPVADDCPTPMGVKGNKELPDSKEVLEKVLLRREFIPDP
QGSNMMFAFFAQHFTHQFFKTDHKRGPGFTRGLGHGVDLNHIYGETLDRQHKLRLFKDGKLKYQVIGGEVYPPTVKDTQV
EMIYPPHIPENLQFAVGQEVFGLVPGLMMYATIWLREHQRVCDILKQEHPEWGDEQLFQTSKLILIGETIKIVIEDYVQH
LSGYHFKLKFDPELLFNQQFQYQNRIASEFNTLYHWHPLLPDTFNIEDQEYSFKQFLYNNSILLEHGLTQFVESFTRQIA
GRVAGGRNVPIAVQAVAKASIDQSREMKYQSLNEYRKRFSLKPYTSFEELTGEKEMAAELKALYSDIDVMELYPALLVEK
PRPDAIFGETMVELGAPFSLKGLMGNPICSPQYWKPSTFGGEVGFKIINTASIQSLICNNVKGCPFTSFNVQDPQPTKTA
TINASASHSRLDDINPTVLIKRRSTEL
>5COX:C|PDBID|CHAIN|SEQUENCE
ANPCCSNPCQNRGECMSTGFDQYKCDCTRTGFYGENCTTPEFLTRIKLLLKPTPNTVHYILTHFKGVWNIVNNIPFLRSL
IMKYVLTSRSYLIDSPPTYNVHYGYKSWEAFSNLSYYTRALPPVADDCPTPMGVKGNKELPDSKEVLEKVLLRREFIPDP
QGSNMMFAFFAQHFTHQFFKTDHKRGPGFTRGLGHGVDLNHIYGETLDRQHKLRLFKDGKLKYQVIGGEVYPPTVKDTQV
EMIYPPHIPENLQFAVGQEVFGLVPGLMMYATIWLREHQRVCDILKQEHPEWGDEQLFQTSKLILIGETIKIVIEDYVQH
LSGYHFKLKFDPELLFNQQFQYQNRIASEFNTLYHWHPLLPDTFNIEDQEYSFKQFLYNNSILLEHGLTQFVESFTRQIA
GRVAGGRNVPIAVQAVAKASIDQSREMKYQSLNEYRKRFSLKPYTSFEELTGEKEMAAELKALYSDIDVMELYPALLVEK
PRPDAIFGETMVELGAPFSLKGLMGNPICSPQYWKPSTFGGEVGFKIINTASIQSLICNNVKGCPFTSFNVQDPQPTKTA
TINASASHSRLDDINPTVLIKRRSTEL
>5COX:D|PDBID|CHAIN|SEQUENCE
ANPCCSNPCQNRGECMSTGFDQYKCDCTRTGFYGENCTTPEFLTRIKLLLKPTPNTVHYILTHFKGVWNIVNNIPFLRSL
IMKYVLTSRSYLIDSPPTYNVHYGYKSWEAFSNLSYYTRALPPVADDCPTPMGVKGNKELPDSKEVLEKVLLRREFIPDP
QGSNMMFAFFAQHFTHQFFKTDHKRGPGFTRGLGHGVDLNHIYGETLDRQHKLRLFKDGKLKYQVIGGEVYPPTVKDTQV
EMIYPPHIPENLQFAVGQEVFGLVPGLMMYATIWLREHQRVCDILKQEHPEWGDEQLFQTSKLILIGETIKIVIEDYVQH
LSGYHFKLKFDPELLFNQQFQYQNRIASEFNTLYHWHPLLPDTFNIEDQEYSFKQFLYNNSILLEHGLTQFVESFTRQIA
GRVAGGRNVPIAVQAVAKASIDQSREMKYQSLNEYRKRFSLKPYTSFEELTGEKEMAAELKALYSDIDVMELYPALLVEK
PRPDAIFGETMVELGAPFSLKGLMGNPICSPQYWKPSTFGGEVGFKIINTASIQSLICNNVKGCPFTSFNVQDPQPTKTA
TINASASHSRLDDINPTVLIKRRSTE

*length of your protein in Amino Acids: 587

Weight of Protein:274398.11

Primer design results for pNIC-Bsa4 cloning (list seqeunces of all of your ~40 nt long primers):

(link to DNA Works output text file - that should be saved in your Google Docs folder after you did the primer design protocol)



Primer design results for 'tail' primers (this is just 2 sequences):




Resources:
See
ProtocolTargetDiscoveryVDS.docx for more

Etiologic Risk Group Categories (for pathogens): http://www.utexas.edu/research/rsc/ibc/agent_class.html#_Toc7238334



SIGMA-ALDRICH RESOURCES

Enzyme Explorer

http://www.sigmaaldrich.com/life-science/metabolomics/enzyme-explorer.html



Enzyme Classification Index (EC number)

http://www.sigmaaldrich.com/life-science/biochemicals/biochemical-products.html?TablePage=14573088





WolframAlpha http://www.wolframalpha.com/

DrugBank http://www.drugbank.ca/





Databases of genes/organisms:

http://www.niaid.nih.gov/Pages/default.aspx

http://eupathdb.org/eupathdb/

https://patricbrc.vbi.vt.edu/portal/portal/patric/Home

http://www.nmpdr.org/FIG/wiki/view.cgi/Main/EssentialGenes

http://tubic.tju.edu.cn/deg/

http://csgid.org/csgid/cake/pages/community_request_gateway

http://tdrtargets.org/

http://gsc.jcvi.org/status.shtml





Scientific Nomenclature page from Center for Disease Control (gene, protein names and abbreviations)

http://wwwnc.cdc.gov/eid/pages/scientific-nomenclature.htm





Gene Information:

NCBI GENE Page: http://www.ncbi.nlm.nih.gov/gene

BLAST Page: http://blast.ncbi.nlm.nih.gov/



Protein Information:

NCBI Protein Page: http://www.ncbi.nlm.nih.gov/protein

Protein Expression Website

Protein Expression Paper: SGC_ProteinProductionPurificationNatMethods2008.pdf



Primer Overlap PCR Articles

HooverLubkowski_PCRoverlapcloninggnf042.pdf

StemmerPCRoverlapGene1995.pdf



Is my target good for Virtual Screening programs?**

Reynolds_THermodynamicsLigandBinding_MedChemLett2011.pdf